/* ===========================================
   อัยโนะ (Aino) - Intro/Landing Page
   เข้ากับธีม aichatbot.html
   =========================================== */

/* === CSS VARIABLES (Same as aichatbot.css) === */
:root {
    /* Color System - KidAi Theme */
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-500: #306E8C; /* KidAi Blue */
    --primary-600: #24556e; /* KidAi Dark Blue */
    --secondary-500: #8CBF56; /* KidAi Green */
    --secondary-600: #76a346; /* KidAi Dark Green */

    /* Accent colors mapped from logo */
    --pink-50: #fffbeb;
    --pink-100: #fef3c7;
    --pink-500: #f59e0b; /* KidAi Amber/Yellow (was Pink) */
    --pink-600: #d97706;
    
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    
    /* Light Theme */
    --bg-base: #ffffff;
    --bg-elevated: #fafafa;
    --bg-overlay: rgba(255, 255, 255, 0.8);
    --bg-sidebar: #f9fafb;
    --bg-hover: #f5f5f5;
    
    --text-primary: #171717;
    --text-secondary: #525252;
    --text-tertiary: #a3a3a3;
    
    --border-subtle: #f0f0f0;
    --border-light: #e5e5e5;
    --border-medium: #d4d4d4;
    
    --accent: var(--primary-500);
    --accent-hover: var(--primary-600);
    --accent-gradient: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    
    /* Border Radius */
    --radius-xs: 0.25rem;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Typography */
    --font-body: 'Sarabun', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Prompt', var(--font-body);
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
}

[data-theme="dark"] {
    --bg-base: #1f1f1f;
    --bg-elevated: #2a2a2a;
    --bg-overlay: rgba(10, 10, 10, 0.8);
    --bg-sidebar: #1a1a1a;
    --bg-hover: #2f2f2f;
    
    --text-primary: #fafafa;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    
    --border-subtle: #2f2f2f;
    --border-light: #3a3a3a;
    --border-medium: #404040;
    
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px -1px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -4px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7), 0 8px 10px -6px rgba(0, 0, 0, 0.7);
}

/* === RESET === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
    /* Prevent horizontal scroll */
    overflow-x: hidden;
    width: 100%;
    /* Support for safe areas (notch) */
    padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-base);
    /* Modern Polka Dot Pattern */
    background-image: radial-gradient(var(--gray-300) 1.5px, transparent 1.5px);
    background-size: 32px 32px;
    background-position: 0 0;
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
    overflow-y: auto;
    width: 100%;
    max-width: 100vw;
    position: relative;
    /* Prevent horizontal scroll */
    min-height: 100vh;
    /* Support for safe areas */
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

[data-theme="dark"] body {
    background-image: radial-gradient(rgba(255, 255, 255, 0.15) 1.5px, transparent 1.5px);
}

/* === CUSTOM SCROLLBAR === */
/* Webkit browsers (Chrome, Safari, Edge) */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-elevated);
    border-left: 1px solid var(--border-light);
    margin: 4px 0;
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-600), var(--secondary-600));
    border-radius: var(--radius-full);
    border: 3px solid var(--bg-elevated);
    transition: all var(--transition-base);
    min-height: 40px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--secondary-600), var(--primary-600));
    border-color: var(--bg-base);
    transform: scaleX(1.1);
}

::-webkit-scrollbar-thumb:active {
    background: var(--primary-600);
    border-color: var(--bg-elevated);
}

::-webkit-scrollbar-corner {
    background: var(--bg-elevated);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-500) var(--bg-elevated);
}

/* Smooth scrollbar animation */
html {
    scrollbar-gutter: stable;
    overflow-y: scroll;
}

/* === NAVIGATION === */
.intro-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
    /* Support for safe areas (notch) */
    padding-top: env(safe-area-inset-top, 0);
    padding-left: env(safe-area-inset-left, 0);
    padding-right: env(safe-area-inset-right, 0);
}

[data-theme="dark"] .intro-nav {
    background: rgba(23, 23, 23, 0.7);
    border-bottom-color: rgba(255, 255, 255, 0.05);
}

.intro-nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-4) var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    /* Prevent overflow on mobile */
    padding-left: max(var(--space-4), env(safe-area-inset-left, 0));
    padding-right: max(var(--space-4), env(safe-area-inset-right, 0));
}

.intro-nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.intro-nav-logo {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    object-fit: cover;
}

.intro-nav-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
}

.intro-nav-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    background: var(--text-primary);
    color: var(--bg-base);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--text-sm);
    transition: all var(--transition-base);
    white-space: nowrap;
    min-height: 40px;
}

.intro-nav-btn:hover {
    transform: translateY(-1px);
    opacity: 0.9;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .intro-nav-btn {
    background: var(--primary-500);
    color: white;
}

/* === HERO SECTION === */
.intro-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-16) var(--space-6);
    padding-top: 140px; /* More breathing room */
    position: relative;
    overflow: hidden;
    /* Support for safe areas */
    padding-left: max(var(--space-4), env(safe-area-inset-left, 0));
    padding-right: max(var(--space-4), env(safe-area-inset-right, 0));
    padding-bottom: max(var(--space-16), env(safe-area-inset-bottom, var(--space-16)));
    width: 100%;
    max-width: 100vw;
}

.intro-hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    /* Soft center glow */
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
}

.intro-gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
    animation: intro-float 25s ease-in-out infinite alternate;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary-500);
    top: -20%;
    left: -10%;
    opacity: 0.2;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--secondary-500);
    bottom: -10%;
    right: -10%;
    opacity: 0.2;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: var(--pink-500); /* Amber/Yellow accent */
    top: 40%;
    right: 10%;
    opacity: 0.15;
    animation-delay: -10s;
}

@keyframes intro-float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, -30px) scale(1.1); }
}

.intro-hero-content {
    text-align: center;
    max-width: 1000px; /* Wider for impact */
    width: 100%;
    z-index: 1;
    animation: intro-fade-in 1s cubic-bezier(0.2, 0.8, 0.2, 1);
    padding: 0 var(--space-4);
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
}

@keyframes intro-fade-in {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.intro-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    color: var(--primary-600);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-8);
    backdrop-filter: blur(8px);
    transition: all var(--transition-base);
}

.intro-hero-badge:hover {
    background: rgba(99, 102, 241, 0.15);
    transform: translateY(-1px);
}

.intro-hero-logo {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-8);
    border-radius: 28px; /* Squircle-ish */
    /* Minimalist logo container */
    background: white;
    box-shadow: 0 20px 60px -10px rgba(99, 102, 241, 0.25);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.intro-logo-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.intro-hero-title {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 10vw, 6rem); /* Bigger */
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: var(--space-6);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.intro-title-line {
    display: block;
}

.intro-gradient-text {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500), var(--pink-500));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-flow 5s ease infinite;
}

@keyframes gradient-flow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.intro-hero-subtitle {
    font-size: clamp(1.125rem, 3vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: var(--space-10);
    line-height: 1.6;
    max-width: 700px;
    font-weight: 400;
}

.intro-hero-subtitle strong {
    color: var(--text-primary);
    font-weight: 600;
}

.intro-hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
    flex-wrap: wrap;
}

.intro-price-badge {
    display: inline-flex;
    align-items: baseline;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-full);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-base);
}

[data-theme="dark"] .intro-price-badge {
    background: rgba(30, 30, 30, 0.6);
    border-color: rgba(255, 255, 255, 0.1);
}

.intro-price-badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px -10px rgba(0, 0, 0, 0.15);
}

.intro-price-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.intro-price-old {
    font-size: var(--text-lg);
    color: var(--text-tertiary);
    text-decoration: line-through;
    margin-right: var(--space-1);
    font-weight: 400;
}

.intro-price-amount {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.intro-price-period {
    font-size: var(--text-lg);
    color: var(--text-secondary);
}

/* === BUTTONS === */
.intro-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-full); /* Pill shape */
    font-size: var(--text-base);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    touch-action: manipulation;
    position: relative;
    overflow: hidden;
}

.intro-btn.large {
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-lg);
}

.intro-btn-primary {
    background: var(--text-primary); /* High contrast black/white */
    color: var(--bg-base);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .intro-btn-primary {
    background: var(--primary-500);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.intro-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .intro-btn-primary:hover {
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.5);
}

.intro-btn-secondary {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

[data-theme="dark"] .intro-btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

.intro-btn-secondary:hover {
    background: var(--bg-base);
    border-color: var(--text-primary);
    transform: translateY(-2px);
}


/* === HERO MOCKUP === */
.intro-hero-mockup {
    margin-top: var(--space-10);
    width: 100%;
    max-width: 800px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    box-shadow: 
        0 20px 50px -10px rgba(0, 0, 0, 0.1),
        0 0 0 1px rgba(255, 255, 255, 0.5);
    overflow: hidden;
    transform: perspective(1000px) rotateX(2deg);
    transition: transform 0.5s ease;
}

[data-theme="dark"] .intro-hero-mockup {
    background: rgba(30, 30, 30, 0.9);
    box-shadow: 
        0 20px 50px -10px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.1);
}

.intro-hero-mockup:hover {
    transform: perspective(1000px) rotateX(0deg) translateY(-5px);
}

.mockup-header {
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.mockup-dots {
    display: flex;
    gap: 6px;
}

.mockup-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.mockup-dot.red { background: #ff5f56; }
.mockup-dot.yellow { background: #ffbd2e; }
.mockup-dot.green { background: #27c93f; }

.mockup-content {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.mockup-message {
    max-width: 80%;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    line-height: 1.6;
}

.mockup-message.user {
    align-self: flex-end;
    background: var(--accent);
    color: white;
    border-bottom-right-radius: 4px;
}

.mockup-message.ai {
    align-self: flex-start;
    background: var(--bg-hover);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
}

.mockup-input-area {
    padding: var(--space-4);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.mockup-input {
    flex: 1;
    height: 12px;
    background: var(--border-light);
    border-radius: var(--radius-full);
    opacity: 0.5;
}

.mockup-send {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--text-xs);
}

/* === USE CASES SECTION === */
.intro-use-cases {
    padding: var(--space-20) 0;
    background: var(--bg-sidebar);
}

.use-case-card {
    background: var(--bg-base);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
    height: 100%;
}

.use-case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.use-case-header {
    padding: var(--space-6);
    background: linear-gradient(to right, rgba(99, 102, 241, 0.05), transparent);
    border-bottom: 1px solid var(--border-subtle);
}

.use-case-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-base);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: var(--text-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-4);
}

.use-case-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.use-case-desc {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.use-case-body {
    padding: var(--space-6);
}

.use-case-chat {
    background: var(--bg-hover);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    font-size: var(--text-xs);
}

.use-case-msg {
    margin-bottom: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
}

.use-case-msg:last-child {
    margin-bottom: 0;
}

.use-case-msg.q {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-600);
    margin-left: var(--space-4);
    border-bottom-right-radius: 2px;
}

.use-case-msg.a {
    background: var(--bg-base);
    color: var(--text-secondary);
    margin-right: var(--space-4);
    border-bottom-left-radius: 2px;
    border: 1px solid var(--border-subtle);
}

/* === FAQ SECTION === */
.intro-faq {
    padding: var(--space-20) 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-elevated);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.faq-question {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
    display: flex;
    gap: var(--space-3);
}

.faq-question i {
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 4px;
}

.faq-answer {
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: 1.6;
    padding-left: 28px; /* Align with text */
}

/* === TECH BADGE === */
.tech-badge-container {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-8);
    flex-wrap: wrap;
}

.tech-badge {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-light);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    font-weight: 500;
}

.tech-badge i {
    color: var(--accent);
}

/* === SECTIONS === */

.intro-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    width: 100%;
    /* Prevent overflow on mobile */
    padding-left: max(var(--space-4), env(safe-area-inset-left, 0));
    padding-right: max(var(--space-4), env(safe-area-inset-right, 0));
    box-sizing: border-box;
}

.intro-section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-16);
}

.intro-section-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--space-6);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.intro-section-subtitle {
    font-size: var(--text-xl);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* === FEATURES SECTION === */
.intro-features {
    padding: var(--space-20) 0; /* More spacing */
    position: relative;
}

.intro-features::before {
    /* Subtle separator */
    content: '';
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: radial-gradient(circle, var(--border-medium) 0%, transparent 100%);
    opacity: 0.5;
}

.intro-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.intro-feature-card {
    padding: var(--space-8);
    background: rgba(255, 255, 255, 0.5); /* Glassy */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-xl);
    text-align: left; /* Modern left align */
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .intro-feature-card {
    background: rgba(30, 30, 30, 0.5);
    border-color: rgba(255, 255, 255, 0.05);
}

.intro-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-500);
}

.intro-feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-6);
    font-size: var(--text-2xl);
    color: var(--text-primary);
    background: var(--bg-base);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-subtle);
}

/* Remove colored backgrounds for cleaner look, use colored icons instead */
.intro-feature-icon.pink,
.intro-feature-icon.gray,
.intro-feature-icon.purple {
    background: var(--bg-base);
}

.intro-feature-icon.pink { color: var(--pink-500); } /* Yellow/Amber */
.intro-feature-icon.purple { color: var(--secondary-500); } /* Green */
.intro-feature-icon.gray { color: var(--primary-500); } /* Blue */

[data-theme="dark"] .intro-feature-icon {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}
[data-theme="dark"] .intro-feature-icon.gray { color: var(--gray-300); }

.intro-feature-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.intro-feature-desc {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: var(--text-base);
}

/* === PRICING SECTION === */
.intro-pricing {
    padding: var(--space-20) 0;
}

.intro-pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
    max-width: 1200px;
    margin: 0 auto;
}

.intro-pricing-card {
    position: relative;
    padding: var(--space-8);
    background: var(--bg-base);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.intro-pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-500);
}

.intro-pricing-card-featured {
    border: 2px solid var(--primary-500);
    background: rgba(99, 102, 241, 0.02);
    box-shadow: var(--shadow-lg);
}

.intro-pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-1) var(--space-4);
    background: var(--bg-base);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-secondary);
}

.intro-pricing-badge.featured {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
}

.intro-pricing-header {
    text-align: center;
    margin-bottom: var(--space-6);
    padding-top: var(--space-4);
}

.intro-pricing-description {
    margin-top: var(--space-3);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1.5;
}

.intro-pricing-title-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    position: relative;
}

.intro-pricing-title {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.intro-pricing-details-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-1);
    color: var(--text-tertiary);
    font-size: var(--text-lg);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    position: relative;
}

.intro-pricing-details-toggle:hover {
    color: var(--accent);
    background: rgba(99, 102, 241, 0.1);
    transform: scale(1.1);
}

.intro-pricing-details-toggle:active {
    transform: scale(0.95);
}

.intro-pricing-details-toggle.active {
    color: var(--accent);
    background: rgba(99, 102, 241, 0.15);
}

.intro-pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.intro-pricing-old {
    font-size: var(--text-xl);
    color: var(--text-tertiary);
    text-decoration: line-through;
    margin-right: var(--space-1);
}

.intro-pricing-amount {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--accent);
}

.intro-pricing-period {
    font-size: var(--text-base);
    color: var(--text-secondary);
}

/* Period Selector (for Starter and Pro) */
.plan-period-selector {
    display: flex;
    gap: var(--space-2);
    margin: var(--space-4) 0;
    padding: var(--space-2);
    background: var(--bg-base);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
}

.period-option {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-4);
    background: transparent;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.period-option:hover {
    background: var(--bg-hover);
    border-color: var(--border-medium);
}

.period-option.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(99, 102, 241, 0.05));
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
}

.period-option span:first-child {
    font-size: var(--text-sm);
    font-weight: 500;
}

.period-option.active span:first-child {
    font-weight: 600;
}

.period-price {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    font-weight: 500;
}

.period-option.active .period-price {
    color: var(--accent);
    font-weight: 600;
}

.period-discount-badge {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: 600;
    color: white;
    background: var(--accent-gradient);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    margin-top: 2px;
    line-height: 1.2;
}

.intro-pricing-features {
    list-style: none;
    margin-bottom: var(--space-8);
}

.intro-pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    color: var(--text-secondary);
}

.intro-pricing-features li i {
    flex-shrink: 0;
}

.intro-pricing-features li i.fa-check {
    color: var(--accent);
}

.intro-pricing-features li i.fa-times {
    color: var(--text-tertiary);
}

.intro-pricing-features .feature-disabled {
    color: var(--text-tertiary);
    opacity: 0.7;
}

.intro-pricing-features .feature-info {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-style: italic;
}

.intro-pricing-features li i.fa-info-circle {
    color: var(--text-tertiary);
}

.intro-pricing-limits {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all var(--transition-base);
    margin: var(--space-4) 0;
    padding: 0;
    background: var(--bg-base);
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
}

.intro-pricing-limits.active {
    max-height: 500px;
    opacity: 1;
    padding: var(--space-4);
    border-color: var(--border-light);
    margin: var(--space-4) 0;
}

.intro-pricing-limits-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
    text-align: center;
}

.intro-pricing-limits-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.intro-pricing-limits-list li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1.5;
}

.intro-pricing-limits-list li i.fa-check-circle {
    color: var(--accent);
    font-size: var(--text-sm);
    flex-shrink: 0;
}

.intro-pricing-limits-list li i.fa-times-circle {
    color: var(--text-tertiary);
    font-size: var(--text-sm);
    flex-shrink: 0;
}

.intro-pricing-slogan {
    text-align: center;
    margin: var(--space-6) 0 var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--bg-base);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-style: italic;
    line-height: 1.6;
}

.intro-pricing-btn {
    display: block;
    width: 100%;
    padding: var(--space-4) var(--space-6);
    text-align: center;
    background: var(--bg-base);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
}

.intro-pricing-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.intro-pricing-btn.primary {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(48, 110, 140, 0.3);
}

.intro-pricing-btn.primary:hover {
    box-shadow: 0 6px 16px rgba(48, 110, 140, 0.4);
}

.intro-pricing-btn.current {
    background: var(--bg-hover);
    border-color: var(--border-medium);
    color: var(--text-tertiary);
    cursor: not-allowed;
    opacity: 0.7;
}

.intro-pricing-btn.current:hover {
    transform: none;
    border-color: var(--border-medium);
}

.current-plan-badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-1) var(--space-3);
    background: linear-gradient(135deg, var(--secondary-500), var(--secondary-600));
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    z-index: 10;
    box-shadow: var(--shadow-md);
}

.current-plan {
    border-color: var(--secondary-500);
    background: linear-gradient(135deg, rgba(140, 191, 86, 0.05), rgba(140, 191, 86, 0.02));
}

/* === SUBSCRIPTION PAGE === */
.subscription-container {
    padding: var(--space-8) var(--space-4);
    max-width: 1200px;
    margin: 0 auto;
}

.subscription-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-16);
    color: var(--text-secondary);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-light);
    border-top-color: var(--accent);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-4);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.subscription-loading p {
    margin: 0;
    font-size: var(--text-base);
    color: var(--text-secondary);
}

/* === PAYMENT SECTION === */
.payment-section {
    padding: var(--space-8) var(--space-4);
    max-width: 800px;
    margin: 0 auto;
}

.payment-container {
    padding: 0;
}

.payment-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-light);
}

.payment-back-btn {
    background: transparent;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-2) var(--space-4);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.payment-back-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--accent);
}

.payment-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.payment-plan-summary {
    margin-bottom: var(--space-4);
}

.payment-plan-card {
    background: var(--bg-elevated);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-6);
}

.payment-plan-info {
    flex: 1;
}

.payment-plan-name {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.payment-plan-description {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin: 0;
}

.payment-plan-price {
    text-align: right;
}

.payment-price-old {
    display: block;
    font-size: var(--text-base);
    color: var(--text-tertiary);
    text-decoration: line-through;
    margin-bottom: var(--space-1);
}

.payment-price-main {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
}

.payment-price-amount {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--accent);
}

.payment-price-period {
    font-size: var(--text-base);
    color: var(--text-secondary);
}

/* Payment Method Selection */
.payment-method-selection {
    margin-bottom: var(--space-6);
}

.payment-method-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.payment-method-option {
    position: relative;
    cursor: pointer;
}

.payment-method-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.payment-method-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-5);
    background: var(--bg-elevated);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    text-align: center;
}

.payment-method-option:hover .payment-method-card {
    border-color: var(--accent);
    background: rgba(99, 102, 241, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
}

.payment-method-option input[type="radio"]:checked + .payment-method-card {
    border-color: var(--accent);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.payment-method-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-lg);
    color: white;
    font-size: 1.5rem;
}

.payment-method-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.payment-method-name {
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.payment-method-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0;
}

.payment-form-hint {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: var(--space-1);
}

.payment-promptpay-info {
    padding: var(--space-4);
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
}

.payment-promptpay-info p {
    margin: 0 0 var(--space-3) 0;
    color: var(--text-primary);
    font-size: var(--text-base);
}

.payment-promptpay-note {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.payment-promptpay-note i {
    color: var(--accent);
}

.payment-form-container {
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
}

.payment-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.payment-form-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.payment-form-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.payment-form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.payment-form-label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.payment-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.payment-form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    padding-right: var(--space-10);
    background: var(--bg-base);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.payment-form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.payment-input-icon {
    position: absolute;
    right: var(--space-4);
    color: var(--text-tertiary);
    pointer-events: none;
}

.payment-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.payment-checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.payment-checkbox {
    margin-top: 4px;
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.payment-checkbox-label a {
    color: var(--accent);
    text-decoration: underline;
}

.payment-form-actions {
    margin-top: var(--space-4);
}

.payment-submit-btn {
    width: 100%;
    padding: var(--space-4) var(--space-6);
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.payment-submit-btn:hover:not(:disabled) {
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
    transform: translateY(-2px);
}

.payment-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.payment-submit-loading {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.payment-error-message {
    padding: var(--space-3) var(--space-4);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-lg);
    color: #dc2626;
    font-size: var(--text-sm);
    text-align: center;
}

/* === PAYMENT STEPS === */
.payment-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
    padding: var(--space-4);
    background: var(--bg-elevated);
    border-radius: var(--radius-xl);
}

.payment-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    position: relative;
    flex: 1;
    max-width: 150px;
}

.payment-step-number {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--bg-base);
    border: 2px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.payment-step.active .payment-step-number {
    background: var(--accent-gradient);
    border-color: var(--accent);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.payment-step.completed .payment-step-number {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.payment-step.completed .payment-step-number::after {
    content: '✓';
    font-size: 1.2rem;
}

.payment-step-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
    text-align: center;
}

.payment-step.active .payment-step-label {
    color: var(--accent);
    font-weight: 600;
}

.payment-step-line {
    flex: 1;
    height: 2px;
    background: var(--border-light);
    margin: 0 var(--space-2);
    transition: all var(--transition-base);
}

.payment-step-line.active {
    background: var(--accent);
}

/* === PAYMENT STEP CONTENT === */
.payment-step-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.payment-step-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.payment-summary-section,
.payment-method-section,
.payment-form-section-wrapper {
    background: var(--bg-elevated);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.payment-section-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-6);
}

/* === PAYMENT PLAN CARD DETAILED === */
.payment-plan-card-detailed {
    background: var(--bg-elevated);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
}

.payment-plan-header {
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 2px solid var(--border-light);
}

.payment-plan-badge-large {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.payment-plan-description-detailed {
    color: var(--text-secondary);
    font-size: var(--text-base);
    margin: 0;
    line-height: 1.6;
}

.payment-price-breakdown {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.payment-price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) 0;
}

.payment-price-row-main {
    padding: var(--space-4) 0;
    border-top: 2px solid var(--border-light);
    border-bottom: 2px solid var(--border-light);
    margin: var(--space-2) 0;
}

.payment-price-label {
    font-size: var(--text-base);
    color: var(--text-secondary);
    font-weight: 500;
}

.payment-price-old-detailed {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-1);
}

.payment-price-old-amount {
    font-size: var(--text-lg);
    color: var(--text-tertiary);
    text-decoration: line-through;
}

.payment-price-old-period {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.payment-discount-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.payment-discount-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--accent);
    font-weight: 600;
    font-size: var(--text-base);
}

.payment-discount-label i {
    color: var(--accent);
}

.payment-discount-amount {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
}

.payment-discount-value {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--accent);
}

.payment-discount-percent {
    font-size: var(--text-sm);
    color: var(--accent);
    font-weight: 500;
}

.payment-price-main-detailed {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
}

.payment-price-amount-large {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--accent);
}

.payment-price-period-detailed {
    font-size: var(--text-base);
    color: var(--text-secondary);
}

/* === PAYMENT COUPON SECTION === */
.payment-coupon-section {
    margin: var(--space-6) 0;
    padding: var(--space-5);
    background: var(--bg-base);
    border: 2px dashed var(--border-light);
    border-radius: var(--radius-xl);
}

.payment-coupon-header {
    margin-bottom: var(--space-4);
}

.payment-coupon-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin: 0;
}

.payment-coupon-title i {
    color: var(--accent);
}

.payment-coupon-input-group {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.payment-coupon-input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-elevated);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    color: var(--text-primary);
    transition: all var(--transition-base);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 1px;
}

.payment-coupon-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.payment-coupon-input::placeholder {
    text-transform: none;
    font-weight: 400;
    letter-spacing: normal;
    color: var(--text-tertiary);
}

.payment-coupon-btn {
    padding: var(--space-3) var(--space-6);
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.payment-coupon-btn:hover:not(:disabled) {
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
}

.payment-coupon-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.payment-coupon-message {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: 500;
    display: none;
}

.payment-coupon-message-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #059669;
}

.payment-coupon-message-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #dc2626;
}

.payment-coupon-message-info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #2563eb;
}

.payment-discount-row-coupon {
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.payment-coupon-remove {
    background: transparent;
    border: none;
    color: var(--accent);
    cursor: pointer;
    padding: var(--space-1);
    margin-left: var(--space-2);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.payment-coupon-remove:hover {
    background: rgba(99, 102, 241, 0.2);
    transform: scale(1.1);
}

.payment-price-original-small {
    width: 100%;
    text-align: right;
    margin-bottom: var(--space-1);
}

.payment-price-amount-original {
    font-size: var(--text-lg);
    color: var(--text-tertiary);
    text-decoration: line-through;
}

.payment-price-final {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
}

.payment-total-savings {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-lg);
    color: #059669;
    font-size: var(--text-sm);
    font-weight: 600;
    margin-top: var(--space-3);
}

.payment-total-savings i {
    color: #10b981;
}

.payment-total-savings strong {
    color: #059669;
    font-size: var(--text-base);
}

/* === PAYMENT QR CODE MODAL === */
.payment-qr-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    animation: fadeIn 0.3s ease;
}

.payment-qr-modal-content {
    background: var(--bg-base);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.payment-qr-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6);
    border-bottom: 1px solid var(--border-light);
}

.payment-qr-modal-header h3 {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.payment-qr-modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.payment-qr-modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.payment-qr-modal-body {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    align-items: center;
}

.payment-qr-image-container {
    width: 100%;
    max-width: 300px;
    aspect-ratio: 1;
    background: white;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.payment-qr-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.payment-qr-instruction {
    text-align: center;
    color: var(--text-primary);
    font-size: var(--text-base);
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.payment-qr-instruction i {
    color: var(--accent);
}

.payment-qr-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    width: 100%;
}

.payment-qr-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.payment-qr-info-item i {
    color: var(--accent);
    margin-top: 2px;
    flex-shrink: 0;
}

.payment-qr-actions {
    display: flex;
    gap: var(--space-3);
    width: 100%;
}

.payment-qr-btn {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.payment-qr-btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.payment-qr-btn-primary:hover:not(:disabled) {
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
}

.payment-qr-btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.payment-qr-btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--accent);
}

.payment-qr-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Responsive QR Modal */
@media (max-width: 768px) {
    .payment-qr-modal {
        padding: var(--space-2);
    }
    
    .payment-qr-modal-content {
        max-width: 100%;
    }
    
    .payment-qr-image-container {
        max-width: 250px;
    }
    
    .payment-qr-actions {
        flex-direction: column;
    }
    
    .payment-qr-btn {
        width: 100%;
    }
}

/* === RECEIPT PAGE === */
.receipt-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-6);
    background: var(--bg-base);
}

.receipt-container.receipt-single-page {
    max-width: 600px;
    padding: var(--space-8) var(--space-6);
}

/* === NEW RECEIPT DESIGN === */
.receipt-container.receipt-new-design {
    max-width: 210mm; /* A4 width */
    width: 100%;
    padding: 15mm 20mm;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin: 0 auto;
}

.receipt-header-new {
    border-bottom: 2px solid var(--border-medium);
    padding-bottom: 12px;
    margin-bottom: 16px;
}

.receipt-header-top {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

.receipt-logo-new {
    flex-shrink: 0;
}

.receipt-logo-new img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.receipt-header-info {
    flex: 1;
}

.receipt-title-new {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 4px 0;
    line-height: 1.2;
}

.receipt-subtitle-new {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin: 0;
}

.receipt-header-meta {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    font-size: 10px;
}

.receipt-meta-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.receipt-meta-label {
    color: var(--text-tertiary);
    font-weight: 500;
}

.receipt-meta-value {
    color: var(--text-primary);
    font-weight: 600;
}

.receipt-status-new {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 600;
}

.receipt-status-success {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.receipt-status-success i {
    color: #10b981;
    font-size: 10px;
}

.receipt-body-new {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.receipt-section-new {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.receipt-section-header {
    background: var(--bg-elevated);
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-light);
}

.receipt-section-title-new {
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.receipt-section-content {
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.receipt-row-new {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    font-size: 11px;
    line-height: 1.5;
}

.receipt-label-new {
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 100px;
    flex-shrink: 0;
}

.receipt-value-new {
    color: var(--text-primary);
    font-weight: 600;
    text-align: right;
    flex: 1;
    word-break: break-word;
}

.receipt-charge-id-new {
    font-family: 'Courier New', monospace;
    font-size: 10px;
}

.receipt-summary-new {
    border: 2px solid var(--border-medium);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-elevated);
}

.receipt-summary-header {
    background: var(--accent);
    padding: 8px 12px;
}

.receipt-summary-header .receipt-section-title-new {
    color: white;
}

.receipt-summary-content {
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.receipt-summary-row-new {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    padding: 4px 0;
}

.receipt-summary-label-new {
    color: var(--text-secondary);
    font-weight: 500;
}

.receipt-summary-value-new {
    color: var(--text-primary);
    font-weight: 600;
}

.receipt-summary-discount-value-new {
    color: #10b981;
}

.receipt-summary-total-new {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    margin-top: 4px;
    border-top: 2px solid var(--border-medium);
}

.receipt-summary-label-total {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}

.receipt-summary-value-total {
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
}

.receipt-footer-note {
    margin-top: 12px;
    padding: 8px 12px;
    background: rgba(59, 130, 246, 0.05);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-md);
    text-align: center;
}

.receipt-note-text {
    font-size: 10px;
    color: #2563eb;
    margin: 0 0 4px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.receipt-note-text i {
    color: #3b82f6;
    font-size: 10px;
}

.receipt-thankyou {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
    margin: 0;
}

.receipt-actions-new {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
    display: flex;
    gap: 12px;
    justify-content: center;
}

.receipt-btn-new {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: 8px;
}

.receipt-btn-primary-new {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.3);
}

.receipt-btn-primary-new:hover {
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
}

.receipt-btn-secondary-new {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.receipt-btn-secondary-new:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--accent);
}

.receipt-header {
    text-align: center;
    padding: var(--space-8) 0;
    border-bottom: 2px solid var(--border-light);
    margin-bottom: var(--space-6);
}

.receipt-logo {
    margin-bottom: var(--space-4);
}

.receipt-logo img {
    max-width: 120px;
    height: auto;
    border-radius: var(--radius-lg);
}

.receipt-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: var(--space-2) 0;
}

.receipt-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.receipt-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.receipt-section {
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.receipt-section-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-4) 0;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.receipt-section-title i {
    color: var(--accent);
}

.receipt-info-row {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.receipt-info-row:last-child {
    margin-bottom: 0;
}

.receipt-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-4);
}

.receipt-info-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.receipt-info-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.receipt-info-value {
    font-size: var(--text-base);
    color: var(--text-primary);
    font-weight: 600;
}

.receipt-charge-id {
    font-family: 'Courier New', monospace;
    font-size: var(--text-sm);
    word-break: break-all;
}

.receipt-status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
}

.receipt-status-success {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.receipt-status-success i {
    color: #10b981;
}

.receipt-price-breakdown {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.receipt-price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2) 0;
}

.receipt-price-label {
    font-size: var(--text-base);
    color: var(--text-secondary);
}

.receipt-price-value {
    font-size: var(--text-base);
    color: var(--text-primary);
    font-weight: 600;
}

.receipt-price-row-discount .receipt-price-value,
.receipt-price-row-coupon .receipt-price-value {
    color: #10b981;
}

.receipt-price-row-total {
    border-top: 2px solid var(--border-light);
    padding-top: var(--space-4);
    margin-top: var(--space-2);
}

.receipt-price-row-total .receipt-price-label {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.receipt-price-row-total .receipt-price-value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--accent);
}

.receipt-note {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.receipt-note-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: #2563eb;
}

.receipt-note-item i {
    color: #3b82f6;
}

.receipt-footer {
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 2px solid var(--border-light);
}

.receipt-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-6);
}

.receipt-btn {
    padding: var(--space-3) var(--space-6);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.receipt-btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.receipt-btn-primary:hover {
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
}

.receipt-btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.receipt-btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--accent);
}

.receipt-footer-text {
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.receipt-footer-text p {
    margin: var(--space-1) 0;
}

.receipt-footer-subtext {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* Single Page Receipt Layout */
.receipt-content-single {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.receipt-main-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
}

.receipt-divider {
    height: 1px;
    background: var(--border-light);
    margin: var(--space-2) 0;
}

.receipt-details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
}

.receipt-detail-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.receipt-detail-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    font-weight: 500;
}

.receipt-detail-value {
    font-size: var(--text-sm);
    color: var(--text-primary);
    font-weight: 600;
}

.receipt-summary {
    padding: var(--space-4);
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
}

.receipt-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2) 0;
}

.receipt-summary-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.receipt-summary-value {
    font-size: var(--text-base);
    color: var(--text-primary);
    font-weight: 600;
}

.receipt-summary-discount-value {
    color: #10b981;
}

.receipt-summary-total {
    border-top: 2px solid var(--border-light);
    padding-top: var(--space-3);
    margin-top: var(--space-2);
}

.receipt-summary-total .receipt-summary-label {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.receipt-summary-total-value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--accent);
}

.receipt-note-single {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    color: #2563eb;
    text-align: center;
}

.receipt-note-single i {
    color: #3b82f6;
    flex-shrink: 0;
}

.receipt-footer-single {
    margin-top: var(--space-6);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.receipt-footer-text-single {
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin: 0;
}

/* Print styles for receipt - Optimized for A4 single page */
@media print {
    @page {
        size: A4;
        margin: 15mm 20mm;
    }
    
    * {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
        color-adjust: exact !important;
    }
    
    body {
        background: white;
        margin: 0;
        padding: 0;
    }
    
    .app-wrapper {
        background: white;
        margin: 0;
        padding: 0;
    }
    
    .receipt-container.receipt-new-design {
        max-width: 100%;
        width: 100%;
        padding: 0;
        margin: 0;
        box-shadow: none;
        page-break-inside: avoid;
    }
    
    .receipt-header-new {
        padding-bottom: 10px;
        margin-bottom: 12px;
    }
    
    .receipt-logo-new img {
        width: 50px;
        height: 50px;
    }
    
    .receipt-title-new {
        font-size: 20px;
    }
    
    .receipt-subtitle-new {
        font-size: 9px;
    }
    
    .receipt-header-meta {
        font-size: 9px;
        gap: 6px;
    }
    
    .receipt-status-new {
        font-size: 9px;
        padding: 3px 6px;
    }
    
    .receipt-body-new {
        gap: 10px;
    }
    
    .receipt-section-new {
        margin-bottom: 0;
    }
    
    .receipt-section-header {
        padding: 6px 10px;
    }
    
    .receipt-section-title-new {
        font-size: 12px;
    }
    
    .receipt-section-content {
        padding: 8px 10px;
        gap: 5px;
    }
    
    .receipt-row-new {
        font-size: 10px;
        gap: 4px;
    }
    
    .receipt-label-new {
        font-size: 10px;
        min-width: 90px;
    }
    
    .receipt-value-new {
        font-size: 10px;
    }
    
    .receipt-charge-id-new {
        font-size: 9px;
    }
    
    .receipt-summary-header {
        padding: 6px 10px;
    }
    
    .receipt-summary-content {
        padding: 8px 10px;
        gap: 5px;
    }
    
    .receipt-summary-row-new {
        font-size: 10px;
        padding: 3px 0;
    }
    
    .receipt-summary-total-new {
        padding: 6px 0;
        margin-top: 3px;
    }
    
    .receipt-summary-label-total {
        font-size: 12px;
    }
    
    .receipt-summary-value-total {
        font-size: 16px;
    }
    
    .receipt-footer-note {
        margin-top: 10px;
        padding: 6px 10px;
    }
    
    .receipt-note-text {
        font-size: 9px;
    }
    
    .receipt-thankyou {
        font-size: 10px;
    }
    
    .receipt-actions-new {
        display: none;
    }
    
    /* Prevent page breaks */
    .receipt-container,
    .receipt-header-new,
    .receipt-body-new,
    .receipt-section-new,
    .receipt-summary-new {
        page-break-inside: avoid;
        break-inside: avoid;
    }
    
    /* Ensure everything fits on one page */
    .receipt-container.receipt-new-design {
        height: auto;
        max-height: 257mm; /* A4 height (297mm) minus margins (40mm) */
    }
}

/* Responsive receipt */
@media (max-width: 768px) {
    .receipt-container {
        padding: var(--space-4);
    }
    
    .receipt-container.receipt-single-page {
        padding: var(--space-6) var(--space-4);
    }
    
    .receipt-container.receipt-new-design {
        padding: var(--space-4);
        max-width: 100%;
    }
    
    .receipt-title {
        font-size: 2rem;
    }
    
    .receipt-title-new {
        font-size: 20px;
    }
    
    .receipt-header-meta {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .receipt-main-info {
        grid-template-columns: 1fr;
    }
    
    .receipt-details-grid {
        grid-template-columns: 1fr;
    }
    
    .receipt-info-row {
        flex-direction: column;
        gap: var(--space-3);
    }
    
    .receipt-info-grid {
        grid-template-columns: 1fr;
    }
    
    .receipt-row-new {
        flex-direction: column;
        gap: 2px;
    }
    
    .receipt-label-new {
        min-width: auto;
    }
    
    .receipt-value-new {
        text-align: left;
    }
    
    .receipt-footer-single {
        gap: var(--space-3);
    }
    
    .receipt-actions-new {
        flex-direction: column;
    }
    
    .receipt-btn {
        width: 100%;
        justify-content: center;
    }
    
    .receipt-btn-new {
        width: 100%;
        justify-content: center;
    }
    
    .receipt-note-single {
        flex-direction: column;
        text-align: center;
    }
    
    .receipt-note-text {
        flex-direction: column;
        gap: 4px;
    }
}

/* === PAYMENT SUBSCRIPTION DETAILS === */
.payment-subscription-details {
    margin: var(--space-6) 0;
}

.payment-details-card-detailed {
    background: var(--bg-base);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.payment-details-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.payment-details-section-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin: 0;
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--border-subtle);
}

.payment-details-section-title i {
    color: var(--accent);
}

.payment-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}

.payment-details-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.payment-details-label-detailed {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
}

.payment-details-label-detailed i {
    color: var(--accent);
    width: 18px;
    text-align: center;
}

.payment-details-value-detailed {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.payment-date-main {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-base);
}

.payment-date-sub {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.payment-info-list,
.payment-terms-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.payment-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-base);
}

.payment-info-item:hover {
    border-color: var(--accent);
    background: rgba(99, 102, 241, 0.05);
}

.payment-info-item i {
    margin-top: 2px;
    width: 24px;
    text-align: center;
    color: var(--accent);
    font-size: var(--text-lg);
    flex-shrink: 0;
}

.payment-info-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    flex: 1;
}

.payment-info-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.payment-info-value {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.payment-term-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    font-size: var(--text-sm);
    color: var(--text-primary);
    line-height: 1.6;
}

.payment-term-item i {
    margin-top: 2px;
    width: 20px;
    text-align: center;
    color: #10b981;
    flex-shrink: 0;
}

.payment-details-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border-subtle);
}

.payment-details-row:last-child {
    border-bottom: none;
}

.payment-details-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.payment-details-label i {
    color: var(--accent);
    width: 20px;
}

.payment-details-value {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-base);
}

/* === PAYMENT TOTAL SECTION === */
.payment-total-section {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 2px solid var(--border-light);
}

.payment-total-breakdown {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.payment-total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2) 0;
}

.payment-total-row-note {
    padding: var(--space-2) 0;
    border-top: 1px solid var(--border-subtle);
    margin-top: var(--space-2);
}

.payment-total-row-final {
    padding: var(--space-4) 0;
    border-top: 2px solid var(--border-light);
    margin-top: var(--space-2);
}

.payment-total-label {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--text-secondary);
}

.payment-total-label-note {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-style: italic;
}

.payment-total-label-note i {
    color: var(--text-tertiary);
}

.payment-total-label-final {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.payment-total-value {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--text-primary);
}

.payment-total-amount {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--accent);
}

.payment-total-amount-final {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--accent);
}

/* === PAYMENT STEP ACTIONS === */
.payment-step-actions {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-8);
    justify-content: flex-end;
}

.payment-next-btn {
    padding: var(--space-4) var(--space-8);
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.payment-next-btn:hover {
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
    transform: translateY(-2px);
}

.payment-back-btn-step {
    padding: var(--space-4) var(--space-6);
    background: var(--bg-base);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.payment-back-btn-step:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--accent);
}

.payment-form-actions {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-4);
    justify-content: space-between;
}

.payment-form-actions .payment-submit-btn {
    flex: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .payment-steps {
        gap: var(--space-1);
        padding: var(--space-3);
    }
    
    .payment-step {
        max-width: 100px;
    }
    
    .payment-step-number {
        width: 32px;
        height: 32px;
        font-size: var(--text-sm);
    }
    
    .payment-step-label {
        font-size: var(--text-xs);
    }
    
    .payment-step-line {
        margin: 0 var(--space-1);
    }
    
    .payment-step-actions {
        flex-direction: column;
    }
    
    .payment-next-btn,
    .payment-back-btn-step {
        width: 100%;
        justify-content: center;
    }
    
    .payment-form-actions {
        flex-direction: column;
    }
    
    .payment-plan-card {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .payment-plan-price {
        text-align: left;
        width: 100%;
    }
    
    .payment-form-row {
        grid-template-columns: 1fr;
    }
    
    .payment-method-grid {
        grid-template-columns: 1fr;
    }
    
    .payment-method-card {
        flex-direction: row;
        text-align: left;
        padding: var(--space-4);
    }
    
    .payment-method-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
}

/* === CTA SECTION === */
.intro-cta {
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(99, 102, 241, 0.05));
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.intro-cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.intro-cta-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--text-primary);
}

.intro-cta-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
}

.intro-cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

/* === FOOTER === */
.intro-footer {
    padding: var(--space-12) 0 var(--space-8);
    background: var(--bg-elevated);
    border-top: 1px solid var(--border-light);
}

.intro-footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.intro-footer-logo {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    object-fit: cover;
    margin-bottom: var(--space-4);
}

.intro-footer-brand h3 {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.intro-footer-brand p {
    color: var(--text-secondary);
}

.intro-footer-links h4,
.intro-footer-contact h4 {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
}

.intro-footer-links ul,
.intro-footer-contact ul {
    list-style: none;
}

.intro-footer-links li,
.intro-footer-contact li {
    margin-bottom: var(--space-2);
}

.intro-footer-links a,
.intro-footer-contact a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.intro-footer-links a:hover,
.intro-footer-contact a:hover {
    color: var(--accent);
}

.intro-footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-light);
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.intro-footer-legal {
    margin-top: var(--space-4);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    font-size: var(--text-sm);
}

.intro-footer-legal a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.intro-footer-legal a:hover {
    color: var(--accent);
}

.intro-footer-legal span {
    color: var(--text-tertiary);
    margin: 0 var(--space-1);
}

/* === RESPONSIVE === */

/* Tablet and below */
@media (max-width: 1024px) {
    .intro-container {
        padding-left: var(--space-4);
        padding-right: var(--space-4);
    }
    
    .intro-features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--space-4);
    }
    
    .intro-pricing-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: var(--space-4);
    }
}

/* Mobile Landscape and Portrait */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .intro-nav-container {
        padding: var(--space-3) var(--space-4);
        flex-wrap: wrap;
        gap: var(--space-2);
    }
    
    .intro-nav-brand {
        flex: 1;
        min-width: 0;
    }
    
    .intro-nav-title {
        font-size: var(--text-base);
    }
    
    .intro-nav-btn {
        padding: var(--space-2) var(--space-4);
        font-size: var(--text-sm);
    }
    
    .intro-hero {
        padding: var(--space-8) var(--space-4);
        padding-top: max(80px, calc(60px + env(safe-area-inset-top, 0)));
        min-height: calc(100vh - env(safe-area-inset-top, 0) - env(safe-area-inset-bottom, 0));
    }
    
    .intro-hero-content {
        padding: 0;
    }
    
    .intro-hero-logo {
        width: 100px;
        height: 100px;
        margin-bottom: var(--space-4);
    }
    
    .intro-hero-title {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
        margin-bottom: var(--space-4);
        line-height: 1.2;
    }
    
    .intro-hero-subtitle {
        font-size: clamp(0.875rem, 3vw, 1rem);
        margin-bottom: var(--space-6);
        padding: 0 var(--space-2);
    }
    
    .intro-hero-actions {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-3);
        padding: 0 var(--space-2);
        margin-bottom: var(--space-6);
    }
    
    .intro-btn {
        justify-content: center;
        width: 100%;
        padding: var(--space-4);
        font-size: var(--text-base);
        min-height: 48px;
    }
    
    .intro-price-badge {
        padding: var(--space-3) var(--space-4);
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-1);
    }
    
    .intro-price-amount {
        font-size: var(--text-2xl);
    }
    
    .intro-features {
        padding: var(--space-10) 0;
    }
    
    .intro-features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
        padding: 0 var(--space-2);
    }
    
    .intro-feature-card {
        padding: var(--space-6);
    }
    
    .intro-feature-icon {
        width: 60px;
        height: 60px;
        font-size: var(--text-2xl);
    }
    
    .intro-feature-title {
        font-size: var(--text-lg);
    }
    
    .intro-pricing {
        padding: var(--space-10) 0;
    }
    
    .intro-pricing-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
        padding: 0 var(--space-2);
        max-width: 100%;
    }
    
    .intro-pricing-card {
        padding: var(--space-6);
    }
    
    .intro-pricing-amount {
        font-size: var(--text-3xl);
    }
    
    .intro-pricing-title-wrapper {
        gap: var(--space-1);
    }
    
    .intro-pricing-details-toggle {
        width: 24px;
        height: 24px;
        font-size: var(--text-base);
    }
    
    .intro-pricing-limits.active {
        padding: var(--space-3);
    }
    
    .intro-pricing-limits-list li {
        font-size: var(--text-xs);
        padding: var(--space-1) 0;
    }
    
    .intro-cta {
        padding: var(--space-10) 0;
    }
    
    .intro-cta-actions {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-3);
        padding: 0 var(--space-2);
    }
    
    .intro-footer {
        padding: var(--space-8) 0 var(--space-6);
    }
    
    .intro-footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        padding: 0 var(--space-4);
    }
    
    .intro-section-header {
        padding: 0 var(--space-2);
    }
    
    .intro-section-title {
        font-size: clamp(1.5rem, 6vw, 2rem);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .intro-nav-container {
        padding: var(--space-2) var(--space-3);
    }
    
    .intro-nav-logo {
        width: 32px;
        height: 32px;
    }
    
    .intro-nav-title {
        font-size: var(--text-sm);
    }
    
    .intro-nav-btn span {
        display: none;
    }
    
    .intro-nav-btn {
        padding: var(--space-2);
        min-width: 40px;
        width: 40px;
        height: 40px;
        justify-content: center;
    }
    
    .intro-hero {
        padding: var(--space-6) var(--space-3);
        padding-top: max(70px, calc(50px + env(safe-area-inset-top, 0)));
    }
    
    .intro-hero-logo {
        width: 80px;
        height: 80px;
    }
    
    .intro-hero-title {
        font-size: clamp(1.5rem, 7vw, 2rem);
        margin-bottom: var(--space-3);
    }
    
    .intro-hero-subtitle {
        font-size: clamp(0.8rem, 3vw, 0.9rem);
        margin-bottom: var(--space-4);
    }
    
    .intro-price-badge {
        padding: var(--space-2) var(--space-3);
        font-size: var(--text-xs);
    }
    
    .intro-price-amount {
        font-size: var(--text-xl);
    }
    
    .intro-features-grid {
        padding: 0;
    }
    
    .intro-feature-card {
        padding: var(--space-4);
    }
    
    .intro-feature-icon {
        width: 50px;
        height: 50px;
        font-size: var(--text-xl);
    }
    
    .intro-feature-title {
        font-size: var(--text-base);
    }
    
    .intro-feature-desc {
        font-size: var(--text-sm);
    }
    
    .intro-pricing-grid {
        padding: 0;
    }
    
    .intro-pricing-card {
        padding: var(--space-4);
    }
    
    .intro-pricing-amount {
        font-size: var(--text-2xl);
    }
    
    .intro-section-title {
        font-size: clamp(1.25rem, 5vw, 1.75rem);
    }
    
    .intro-section-subtitle {
        font-size: var(--text-base);
    }
}

/* Very Small Mobile */
@media (max-width: 360px) {
    html {
        font-size: 13px;
    }
    
    .intro-hero-title {
        font-size: 1.5rem;
    }
    
    .intro-hero-subtitle {
        font-size: 0.875rem;
    }
    
    .intro-feature-card {
        padding: var(--space-3);
    }
    
    .intro-pricing-card {
        padding: var(--space-3);
    }
}

/* Landscape Orientation */
@media (max-height: 500px) and (orientation: landscape) {
    .intro-hero {
        padding-top: max(60px, calc(40px + env(safe-area-inset-top, 0)));
        min-height: auto;
        padding-bottom: var(--space-4);
    }
    
    .intro-hero-logo {
        width: 60px;
        height: 60px;
        margin-bottom: var(--space-2);
    }
    
    .intro-hero-title {
        font-size: clamp(1.5rem, 5vw, 2rem);
        margin-bottom: var(--space-2);
    }
    
    .intro-hero-subtitle {
        display: none;
    }
    
    .intro-hero-actions {
        margin-bottom: var(--space-3);
    }
    
    .intro-price-badge {
        display: none;
    }
}

/* === 404 ERROR PAGE === */
.error-404-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-16) var(--space-6);
    padding-top: 120px;
    position: relative;
    overflow: hidden;
}

.error-404-background {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.error-404-content {
    text-align: center;
    max-width: 700px;
    z-index: 1;
    animation: intro-fade-in 1s ease-out;
}

.error-404-icon {
    font-size: 6rem;
    color: var(--accent);
    margin-bottom: var(--space-6);
    animation: error-pulse 2s ease-in-out infinite;
}

@keyframes error-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.error-404-title {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.error-404-number {
    font-family: var(--font-heading);
    font-size: clamp(6rem, 15vw, 10rem);
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.error-404-text {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-primary);
}

.error-404-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    line-height: 1.8;
}

.error-404-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
    margin-bottom: var(--space-12);
}

.error-404-suggestions {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-light);
}

.error-404-suggestions-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-6);
}

.error-404-links {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.error-404-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
    font-weight: 500;
}

.error-404-link:hover {
    background: var(--bg-hover);
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.error-404-link i {
    font-size: var(--text-lg);
}

/* === RESPONSIVE 404 === */
@media (max-width: 768px) {
    .error-404-section {
        padding: var(--space-12) var(--space-4);
        padding-top: 100px;
    }
    
    .error-404-icon {
        font-size: 4rem;
    }
    
    .error-404-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .error-404-links {
        flex-direction: column;
        align-items: stretch;
    }
    
    .error-404-link {
        justify-content: center;
    }
}

/* === SMOOTH SCROLL === */
html {
    scroll-behavior: smooth;
}

/* === ANIMATION ON SCROLL === */
@media (prefers-reduced-motion: no-preference) {
    .intro-feature-card,
    .intro-pricing-card,
    .use-case-card,
    .faq-item {
        opacity: 0;
        transform: translateY(30px);
        animation: intro-fade-up 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
        animation-play-state: paused; /* Wait for JS or viewport trigger */
    }
    
    /* Staggered delays handled by JS or simple nth-child fallback */
    .intro-feature-card:nth-child(1) { animation-delay: 0.1s; }
    .intro-feature-card:nth-child(2) { animation-delay: 0.2s; }
    .intro-feature-card:nth-child(3) { animation-delay: 0.3s; }
    .intro-feature-card:nth-child(4) { animation-delay: 0.4s; }
    .intro-feature-card:nth-child(5) { animation-delay: 0.5s; }
    .intro-feature-card:nth-child(6) { animation-delay: 0.6s; }
    
    .intro-pricing-card:nth-child(1) { animation-delay: 0.1s; }
    .intro-pricing-card:nth-child(2) { animation-delay: 0.3s; }
    .intro-pricing-card:nth-child(3) { animation-delay: 0.5s; }
}

@keyframes intro-fade-up {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* === ADVANCED ANIMATIONS === */

/* 1. Hero Entrance */
.intro-hero-content > * {
    opacity: 0;
    animation: hero-entrance 1s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.intro-hero-badge { animation-delay: 0.1s; }
.intro-hero-logo { animation-delay: 0.2s; }
.intro-hero-title { animation-delay: 0.3s; }
.intro-hero-subtitle { animation-delay: 0.4s; }
.intro-hero-actions { animation-delay: 0.5s; }
.tech-badge-container { animation-delay: 0.6s; }
.intro-hero-mockup { animation-delay: 0.8s; }

@keyframes hero-entrance {
    from {
        opacity: 0;
        transform: translateY(20px);
        filter: blur(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

/* 2. Mockup Typing Animation */
.mockup-message {
    opacity: 0;
    transform: translateY(10px);
    animation: message-pop 0.5s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.mockup-message.user {
    animation-delay: 1.5s;
}

.mockup-message.ai {
    animation-delay: 2.5s;
}

@keyframes message-pop {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 3. Floating Orbs Pulse */
.intro-gradient-orb {
    animation: orb-float 20s ease-in-out infinite alternate;
}

@keyframes orb-float {
    0% { transform: translate(0, 0) scale(1) rotate(0deg); opacity: 0.3; }
    50% { transform: translate(50px, 20px) scale(1.1) rotate(180deg); opacity: 0.5; }
    100% { transform: translate(-30px, 50px) scale(0.9) rotate(360deg); opacity: 0.3; }
}

/* 4. Feature Icon Hover */
.intro-feature-card:hover .intro-feature-icon {
    animation: icon-bounce 0.6s cubic-bezier(0.25, 1.5, 0.5, 1);
}

@keyframes icon-bounce {
    0%, 100% { transform: scale(1); }
    40% { transform: scale(1.2) rotate(5deg); }
    60% { transform: scale(0.9); }
}

/* 5. Gradient Text Shimmer */
.intro-gradient-text {
    background-size: 200% auto;
    animation: text-shimmer 4s linear infinite;
}

@keyframes text-shimmer {
    to {
        background-position: 200% center;
    }
}

/* 6. Button Glow */
.intro-btn-primary {
    position: relative;
    overflow: hidden;
}

.intro-btn-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    transform: rotate(45deg);
    animation: btn-shine 3s infinite;
}

@keyframes btn-shine {
    0% { transform: translateX(-100%) rotate(45deg); }
    20% { transform: translateX(100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

/* Intersection Observer Class (to be toggled by JS) */
.animate-in {
    animation-play-state: running !important;
}